多裂肌核心稳定性训练:超声联合表面肌电监测与无监测的比较

Core stability training targeting multifidus: monitor using ultrasound combined with surface electromyogram versus no monitor

背景:有研究表明核心稳定性训练有利于增强局部核心肌群,但超声联合表面肌电监测多裂肌核心稳定性训练是否更有利于下背痛康复尚待研究。目的:观察超声联合表面肌电监测多裂肌核心稳定性训练与无监测比较,对健康人训练前、后多裂肌肌肉厚度收缩比和表面肌电信号的影响。方法:选取50例健康成年人随机分成监测组(26例)和对照组(24例),监测组在超声联合表面肌电监测下进行核心稳定性训练,对照组在无监测下进行相同的核心稳定性训练,对两组训练前和训练4,8周后双侧多裂肌肌肉厚度收缩比和表面肌电信号的变化进行分析比较。结果与结论:两组受试者入组前多裂肌厚度收缩比和肌电平均振幅比较无显著性意义(P> 0.05);经过8周训练,监测组和对照组双侧多裂肌厚度收缩比、肌电平均振幅均明显增大,与训练前比较差异均有显著性意义(P <0.05),且监测组增大比对照组更明显(P <0.05)。结果证实,应用超声联合表面肌电监测核心稳定性训练能明显改善健康人双侧多裂肌厚度收缩比、增大表面肌电平均肌电值,效果优于无监测训练,为下背痛患者进行核心稳定性监测训练提供基础依据。

BACKGROUND:Core stability training has been shown to improve local core muscles.But whether the core stability training monitored by ultrasound imaging combined with surface electromyogram can treat low back pain better remains unclear.OBJECTIVE:To investigate the influence of multifidus thickness contraction ratio and electromyogram signal characteristics before and after core stability training monitored using ultrasound imaging combined with surface electromyogram,compared with the same training without monitor.METHODS:Fifty healthy volunteers were randomly allocated into monitor group(n=26)and control group(n=24),and then underwent core stability training monitored using ultrasound imaging combined with surface electromyogram and without monitor,respectively.The multifidus thickness contraction ratio value and surface electromyogram signal value before and after 4 and 8 weeks of training were compared.RESULTS AND CONCLUSION:Before training,there were no significant differences in the thickness contraction ratio value and average amplitude of electromyogram of multifidus between two groups(P>0.05).After 8 weeks of training,the thickness contraction ratio value and average amplitude of electromyogram value of multifidus in both groups especially the monitor group were significantly higher than those before training(P<0.05).In summary,the core stability training using ultrasound imaging combined with surface electromyogram can obviously increase multifidus thickness contraction ratio and average surface electromyogram value in healthy human.Meanwhile,the effect of monitoring training is greater than the same training without monitor,which provides evidence for low back pain patients undergoing core stability training.